Following 1 month of magnetically induced tumor growth pressure initiated on 3-month-old mice, we found a significant increase in the number of the CD133 + crypts per mouse compared with control mice (4 and 9-month-old), and comparable with its level in 5-month-old mice with gastric tumors showing that magnetically induced tumor growth pressure promotes the expression of the CD133 cancer cell marker in Apc colon crypts. The gene discussed is PROM1; the disease is neoplasm.